Search a number
-
+
149030769 = 3237720899
BaseRepresentation
bin10001110001000…
…00011101110001
3101101102112210010
420320200131301
5301122441034
622442125133
73456512016
oct1070403561
9341375703
10149030769
1177140028
1241ab07a9
1324b4c9b4
1415b1570d
15d13c3e9
hex8e20771

149030769 has 8 divisors (see below), whose sum is σ = 198800800. Its totient is φ = 99307296.

The previous prime is 149030743. The next prime is 149030771. The reversal of 149030769 is 967030941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149030769 - 29 = 149030257 is a prime.

It is a super-2 number, since 2×1490307692 = 44420340217462722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149030719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319 + ... + 17580.

It is an arithmetic number, because the mean of its divisors is an integer number (24850100).

Almost surely, 2149030769 is an apocalyptic number.

It is an amenable number.

149030769 is a deficient number, since it is larger than the sum of its proper divisors (49770031).

149030769 is a wasteful number, since it uses less digits than its factorization.

149030769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23279.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 149030769 is about 12207.8158980221. The cubic root of 149030769 is about 530.1824090302.

The spelling of 149030769 in words is "one hundred forty-nine million, thirty thousand, seven hundred sixty-nine".

Divisors: 1 3 2377 7131 20899 62697 49676923 149030769